DE3751266T2 - Verfahren zur Regelung von Zellulosendigestion. - Google Patents
Verfahren zur Regelung von Zellulosendigestion.Info
- Publication number
- DE3751266T2 DE3751266T2 DE3751266T DE3751266T DE3751266T2 DE 3751266 T2 DE3751266 T2 DE 3751266T2 DE 3751266 T DE3751266 T DE 3751266T DE 3751266 T DE3751266 T DE 3751266T DE 3751266 T2 DE3751266 T2 DE 3751266T2
- Authority
- DE
- Germany
- Prior art keywords
- electrode
- measuring
- current
- digester
- measuring electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229920002678 cellulose Polymers 0.000 title abstract 6
- 239000001913 cellulose Substances 0.000 title abstract 6
- 230000029087 digestion Effects 0.000 title abstract 3
- 230000001105 regulatory effect Effects 0.000 title 1
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 16
- 238000010411 cooking Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000792 Monel Inorganic materials 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229940075397 calomel Drugs 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 description 10
- 239000003513 alkali Substances 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000004448 titration Methods 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000000500 calorimetric titration Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000000954 titration curve Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
- G01N33/343—Paper pulp
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Food Science & Technology (AREA)
- Paper (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI863615A FI80526C (fi) | 1986-09-08 | 1986-09-08 | Foerfarande foer styrning av cellulosakok. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3751266D1 DE3751266D1 (de) | 1995-06-01 |
| DE3751266T2 true DE3751266T2 (de) | 1995-09-21 |
Family
ID=8523123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3751266T Expired - Fee Related DE3751266T2 (de) | 1986-09-08 | 1987-09-07 | Verfahren zur Regelung von Zellulosendigestion. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4933292A (fi) |
| EP (1) | EP0259820B1 (fi) |
| AT (1) | ATE121843T1 (fi) |
| CA (1) | CA1281510C (fi) |
| DE (1) | DE3751266T2 (fi) |
| FI (1) | FI80526C (fi) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991004486A1 (en) * | 1989-09-22 | 1991-04-04 | Blanchard Marketing Services Limited | Sensing method and device for aggregation control |
| US5282931A (en) * | 1992-07-08 | 1994-02-01 | Pulp And Paper Research Institute Of Canada | Determination and control of effective alkali in kraft liquors by IR spectroscopy |
| FI91997C (fi) * | 1993-08-20 | 1994-09-12 | Conrex Oy | Elektrodijärjestelmän, johon kuuluu mittauselektrodi, vertailuelektrodi ja vastaelektrodi, käyttö vetyperoksidin pitoisuuden mittaamisessa |
| US6416651B1 (en) * | 1999-02-26 | 2002-07-09 | Honeywell Measurex | Multi-electrode composition measuring device and method |
| FI113089B (fi) | 1999-10-06 | 2004-02-27 | Liqum Oy | Menetelmä paperinvalmistusprosessin analysoimiseksi ja sähkökemiallinen anturi nesteen analysoimiseksi |
| CA2293223C (en) * | 1999-12-23 | 2004-02-10 | Michael G. Paice | Electrochemical method for determinating lignin content of pulp |
| FI122238B (fi) * | 2006-02-09 | 2011-10-31 | Metso Automation Oy | Menetelmä ja laitteisto massasuspension kokonaisperoksidipitoisuuden määrittämiseksi |
| WO2016112203A1 (en) * | 2015-01-07 | 2016-07-14 | Andritz Inc. | System and method for monitoring and control of multiple processing zones within pressurized vessels |
| FI128975B (fi) | 2018-11-22 | 2021-04-15 | Andritz Oy | Järjestely lignoselluloosapitoisen materiaalin käsittelyastian monitorointianturien asentamiseksi |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2123497C3 (de) * | 1970-05-15 | 1978-08-03 | Mo Och Domsjoe Ab, Oernskoeldsvik (Schweden) | Verfahren zur Herstellung von Sulfatpulpen zur Erzielung von Pulpen mit einem vorherbestimmten Maß an Delignifizierung |
| SE377348B (fi) * | 1972-07-14 | 1975-06-30 | Mo Och Domsjoe Ab | |
| US3941649A (en) * | 1972-07-14 | 1976-03-02 | Mo Och Domsjo Aktiebolag | Process for obtaining a predetermined Kappa number in sulfate pulping |
| SE384884C (sv) * | 1974-09-05 | 1986-04-14 | Mo Och Domsjoe Ab | Forfarande for reglering av tillforseln av reaktionskemikalier vid delignifiering och/eller blekning av massa |
| US4012197A (en) * | 1975-11-07 | 1977-03-15 | Measurex Corporation | Titration apparatus and method therefor |
| DK424281A (da) * | 1981-09-25 | 1983-03-26 | Kemotron A S | Fremgangsmaade til styring af hvidluds egenskaber |
| FI65675C (fi) * | 1982-05-12 | 1984-06-11 | Kajaani Oy | Elektrodsystem foer voltametriska maetningar |
| US4624742A (en) * | 1984-02-27 | 1986-11-25 | Westvaco Corporation | Method of determining black liquor solids concentration remaining in a washed pulp mat |
-
1986
- 1986-09-08 FI FI863615A patent/FI80526C/fi not_active IP Right Cessation
-
1987
- 1987-09-04 US US07/094,319 patent/US4933292A/en not_active Expired - Fee Related
- 1987-09-04 CA CA000546233A patent/CA1281510C/en not_active Expired - Fee Related
- 1987-09-07 DE DE3751266T patent/DE3751266T2/de not_active Expired - Fee Related
- 1987-09-07 AT AT87113064T patent/ATE121843T1/de not_active IP Right Cessation
- 1987-09-07 EP EP87113064A patent/EP0259820B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE121843T1 (de) | 1995-05-15 |
| FI863615A (fi) | 1988-03-09 |
| EP0259820A2 (en) | 1988-03-16 |
| EP0259820B1 (en) | 1995-04-26 |
| EP0259820A3 (en) | 1990-05-23 |
| FI863615A0 (fi) | 1986-09-08 |
| FI80526C (fi) | 1990-06-11 |
| US4933292A (en) | 1990-06-12 |
| DE3751266D1 (de) | 1995-06-01 |
| FI80526B (fi) | 1990-02-28 |
| CA1281510C (en) | 1991-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |